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4088778 — ELBOW,TUBE TO BOSS

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

4088778: ELBOW,TUBE TO BOSS.

The ELBOW,TUBE TO BOSS is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, flow_angle: 90.0 DEGREES, leg_length: 1.605 INCHES NOMINAL FIRST END IN, thread_class: 3A SECOND END A, connection_type: THREADED EXTERNAL BOSS SECOND END, connection_style: GROOVED (TUBE) FIRST END. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-577-1095, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
4088778
NSN: 4730-01-577-1095
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 77445 — RTX CORPORATION DBA PRATT & WHITNEY DIV PRATT &WHITNEY (USA)
SPECIFICATIONS
materialSTEEL OVERALL
flow_angle90.0 DEGREES
leg_length1.605 INCHES NOMINAL FIRST END IN
thread_class3A SECOND END A
connection_typeTHREADED EXTERNAL BOSS SECOND END
connection_styleGROOVED (TUBE) FIRST END
style_designatorELBOW
nominal_thread_size0.438 INCHES SECOND END IN
nominal_overall_length1.605 INCHES IN
thread_quantity_per_inch20 SECOND END
thread_series_designatorUNIFIED NATIONAL JOINT FINE (UNJF) SECOND END
material_document_and_classificationAMS 5646 SST ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NSN4730-01-577-1095
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 4088778 · OEM ⚠ VERIFY BEFORE ORDERING NPT ≠ BSPT — tapered threads look identical but are NOT interchangeable. Wrong thread = leak. JIC (37°) ≠ AN (37°) ≠ SAE 45° — flare angles must match exactly. Measure thread pitch with gauge — visual identification is unreliable ✓ BROKER TIP Always use thread sealant (PTFE tape or pipe compound) on tapered threads (NPT/BSPT). JIC/AN flare fittings seal metal-to-metal — never use tape on flare connections PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
FLOW ANGLE: 90.0 DEGREES
•
CONNECTION STYLE: GROOVED (TUBE) FIRST END
•
NOMINAL OVERALL LENGTH: 1.605 INCHES IN
•
CONNECTION TYPE: THREADED EXTERNAL BOSS SECOND END
•
STYLE DESIGNATOR: ELBOW
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 5646 SST ASSN STD SINGLE MATERIAL RESPONSE OVERALL
TECHNICAL CHARACTERISTICS
FLOW ANGLE90.0 DEGREES
CONNECTION STYLEGROOVED (TUBE) FIRST END
CONNECTION STYLEFLARED W/ GASKET SEAL (BOSS) SECOND END
NOMINAL OVERALL LENGTH1.605 INCHES IN
CONNECTION TYPETHREADED EXTERNAL BOSS SECOND END
CONNECTION TYPEUNTHREADED EXTERNAL TUBE FIRST END
STYLE DESIGNATORELBOW
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 5646 SST ASSN STD SINGLE MATERIAL RESPONSE OVERALL
LEG LENGTH1.070 INCHES MINIMUM AND 1.090 INCHES MAXIMUM SECOND END IN
LEG LENGTH1.605 INCHES NOMINAL FIRST END IN
OTHER ITEMS IN FSC 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
4730-00-000-1895 4730-00-000-4289 4730-00-000-4445 4730-00-000-8373 4730-00-000-8897 4730-00-001-0007 4730-00-001-0008
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Terminal item — no further procurement; issued until stock is exhaustedNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 4088778?
4088778 is a ELBOW,TUBE TO BOSS.
What is the NSN for 4088778?
4088778 is cataloged in the U.S. Government catalog under NSN 4730-01-577-1095. This indicates validated use in U.S. government and defense supply chains.
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